Package net.sf.basedb.core.query

Class ConditionalQueryElement

java.lang.Object

net.sf.basedb.core.query.ConditionalQueryElement

All Implemented Interfaces:

Expression, QueryElement, Restriction

public class ConditionalQueryElement
extends Object
implements Restriction, Expression

Since:

3.7

Author:

Nicklas

See Also:

• Restrictions.conditionalRestriction(Filter, Restriction, Restriction, boolean)

Field Summary

Fields

Modifier and Type	Field	Description
private final Filter<Query>	filter
private final QueryElement	ifFalse
private final QueryElement	ifTrue

Constructor Summary

Constructors

Constructor	Description
ConditionalQueryElement(Filter<Query> filter, QueryElement ifTrue, QueryElement ifFalse)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object other)	This query element is equal to another ConditionalQueryElement if their filter and child elements are equal.
Collection<? extends QueryElement>	getChildren()	Get the children of this query element or null if it has no children.
int	hashCode()
String	toQl(Query query, DbControl dc)	Create a query language string of the query element.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

filter

private final Filter<Query> filter

ifTrue

private final QueryElement ifTrue

ifFalse

private final QueryElement ifFalse

Constructor Details

ConditionalQueryElement

ConditionalQueryElement(Filter<Query> filter,
 QueryElement ifTrue,
 QueryElement ifFalse)

Method Details

toQl

public String toQl(Query query,
 DbControl dc)
            throws BaseException

Description copied from interface: QueryElement

Create a query language string of the query element. Use the Query.getQueryType() method to find out which query language is wanted in case the element requires different syntax for different languages.

Specified by:

toQl in interface QueryElement

Parameters:

query - The query that is about to be executed

dc - The DbControl object used to execute the query

Throws:

BaseException - If there is any other error

getChildren

public Collection<? extends QueryElement> getChildren()

Description copied from interface: QueryElement

Get the children of this query element or null if it has no children. For example the AddExpression has two children, the expression beeing added.

Specified by:

getChildren in interface QueryElement

Returns:

The expression

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object other)

This query element is equal to another ConditionalQueryElement if their filter and child elements are equal.

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object